3 ms·
PTP and NTP are about the same without hardware support. With hardware support, and without any thought or tuning-- you probably get your machines synchronized
by mlyle 4y ago
PTP and NTP are about the same without hardware support.
With hardware support, and without any thought or tuning-- you probably get your machines synchronized 2 orders of magnitude closer. (From sub-millisecond to a few microseconds). And, of course, PTP can do much better than this.
- zie 4y agoI agree with everything you said. Most problem domains probably have no need for more than what NTP can deliver. Regardless, if NTP alone can't solve your time problems, then you need to really understand what your actual problem is, as there is no guarantee that PTP can solve it either.
- mlyle 4y ago> Regardless, if NTP alone can't solve your time problems, then you need to really understand what your actual problem is, as there is no guarantee that PTP can solve it either. Yah... on the other hand, there's a whole lot of applications where precision is a nice-to-have but not a necessity--- e.g. better ordering events between multiple machines without vector clocks, etc, when we're troubleshooting.